How Do I Calibrate My Back of Truck System (BOTS/TruckSiS) Drum Scale

Issue

Over time, the drum scales can lose some of their accuracy.  This procedure will help to zero out the scale.

 

Resolution

1. Turn on the scale by holding the ON/OFF key. (If the scale does not turn on, plug in
   the ac adapter because the battery is low.)
2. Press the HOLD key and the PRINT key simultaneously to access the setup menu.
3. If done correctly, the display should now show C01.
4. Press the PRINT key to access the C1 channel. The display should show [C1 X].
5. Press the ZERO key to change the value of C1 to 2. (The value of 2 sets the scale up in pounds.)
6.  Press the PRINT key to set the value. The display will now show C02.
7. Press the PRINT key to access the C2 channel. The display should show [C2 X].
8. Press the ZERO key to change the setting to the decimal places desired. (The C2 channel is used to adjust the decimal point on the scale. A value of 1 means there is one digit behind the decimal point.)
9. Press the PRINT key to set the value. The display will now show C03.
10. Press the PRINT key to access the C3 channel. The display should show [C3 X].
11. Press the ZERO key to cycle through the values until the desired graduation appears.  (The C3 channel adjusts the divisions on the scale. A value of 1 selected and C2 set to 1, the scale will read in 0.1 lb. increments.)
12. Press the PRINT key to set the value. The display will now show C04.
13. Press the PRINT key to access the C4 channel. The display will show [XXXXXX].
14. Enter in the maximum capacity you want to use for this scale by using the UNIT and GROSS keys to move the cursor left and right, and the TARE and ZERO keys move the values down and up. (The C4 channel is used to enter in the max capacity of the scale; Make sure this doesn’t exceed the max capacity of the scale; Max capacity divided by the increment set in C02 and C03 above cannot exceed 5000)
15. Press the PRINT key to set the value. The display will now show C05.
16. Press the PRINT key to access the C5 channel. The display should show [C5 0].
17. The C5 channel calibrates zero on the scale. Make sure the scale is empty.
18. Press the ZERO key to change the value to 1.
19. Press the PRINT key. The display will count down from 10 while the scale is calibrating zero. When the display shows 0 the zero calibration is complete.
20. Press the PRINT key to continue. The display will now show C06.
21. Press the PRINT key to access the C06 channel. The display will show [C6 0].
22. The C6 channel is used to calibrate the scale with a known weight. Press the ZERO key to set the value of C6 to 1. Press the PRINT key. The display will flash SPAN, and then show [XXXXXX].
23. Enter the calibration weight value you will use (at least 10% of max capacity you set in C04 by using the UNIT and GROSS keys to move the cursor left and right, and the TARE and ZERO keys move the values down and up.
24. Place the calibration weight you have on the empty scale and press the PRINT key.
25. The scale will count down from 10 to 0. Once 0 has been reached, the display will show CALEnd.
26. Press the PRINT key to continue. The display will now show C07.
27. Press the ACCUM/TOTAL key to save and exit the setup menu.
28. The scale has now been calibrated. The display will show the value of the calibration weight on the scale.
29. If the scale does not show the value of the calibration weight, check that the feet on the platform are not screwed in too tightly, and verify that the platform is level.
30. Unload the scale; the display should read 000000.
31. If the scale does not display 00000, check that the feet on the platform are not screwed in too tightly, and verify that the platform is level.

This is pulled from the product's user manual.  If the above instructions are not working, please refer to the original manual.